Default Mesa Version should be 3.4.2, so that people who don't care and have
GL in XF don't need to build the whole thing. If MESA_REQD is set to 5.0.1
(as, for example, by MesaDemos), require version 5.0.1 of MesaLib, gl* etc.
If libGL.so.5 is found to be present on the system, force MESA_REQD to be
5.0.1 to avoid accidental downgrades if MESA_REQD was not specified before-
hand.
Changes reviewed by tron@ (thanks!).
X11PREFIX != X11BASE (xpkgwedge is installed). Introduce a new variable
MESA_REQD that defaults to "3.4.2" and represents the version of Mesa/GL
needed by a package. MESA_REQD is intended to be used by package Makefiles
or by buildlink2.mk files.
It should now be possible to update this package to the latest release
(5.0), and have it work on:
* XF86-3.x with or without xpkgwedge
* XF86-4.x with xpkgwedge
buildlink2.mk files back into the main trunk. This provides sufficient
buildlink2 infrastructure to start merging other packages from the
buildlink2 branch that have already been converted to use the buildlink2
framework.